species
Penstemon barbatus
Beardtongue
Scale drawing from this record, beside a 1.7 m figure.
Penstemon barbatus belongs to the family Plantaginaceae, also known as Beardtongue, introduced to the UK. It reaches 90 cm tall and 50 cm across in about 10 years. It grows in full sun, on loam, sand or chalk soil, where the ground is neutral or alkaline and in well drained conditions, and suits average positions. It flowers from June to September. Its RHS hardiness rating is H5 (hardy, cold winter): −15 to −10°C.
Assembled from the attributes recorded below.
What this plant needs
- Size at maturity
- 90 cm tall × 50 cm across, after about 10 years
- Hardiness
- H5 (RHS)
- Aspect
- Full sun
- Soil
- Loam, Sand, Chalk
- Acidity
- Neutral, Alkaline
- Moisture
- Well drained
- Exposure
- Average
- In the UK
- Introduced
When it flowers
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
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